Patents by Inventor Koei Misaizu

Koei Misaizu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Frequency synthesizer
    Patent number: 4720688
    Abstract: A microwave frequency synthesizer comprised of a phase-locked loop having a low noise and highly stabilized reference voltage-controlled oscillator and further two phase-locked loops each having a stabilized voltage controlled oscillator, the signal outputs from which are frequency-converted with as small multiplication factors as possible. This frequency synthesizer can minimize the phase noise that may be generated by frequency dividers in a digital system.
    Type: Grant
    Filed: May 14, 1986
    Date of Patent: January 19, 1988
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Makoto Hasegawa, Koei Misaizu, Sadahiko Yamashita